+ vmalloc-add-for_each_vmap_node-helper.patch added to mm-new branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: vmalloc: add for_each_vmap_node() helper
has been added to the -mm mm-new branch.  Its filename is
     vmalloc-add-for_each_vmap_node-helper.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/vmalloc-add-for_each_vmap_node-helper.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Subject: vmalloc: add for_each_vmap_node() helper
Date: Tue, 8 Apr 2025 17:15:47 +0200

To simplify iteration over vmap-nodes, add the for_each_vmap_node() macro
that iterates over all nodes in a system.  It tends to simplify the code.

Link: https://lkml.kernel.org/r/20250408151549.77937-1-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Christop Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmalloc.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/mm/vmalloc.c~vmalloc-add-for_each_vmap_node-helper
+++ a/mm/vmalloc.c
@@ -900,6 +900,11 @@ static struct vmap_node *vmap_nodes = &s
 static __read_mostly unsigned int nr_vmap_nodes = 1;
 static __read_mostly unsigned int vmap_zone_size = 1;
 
+/* A simple iterator over all vmap-nodes. */
+#define for_each_vmap_node(vn)	\
+	for ((vn) = &vmap_nodes[0];	\
+		(vn) < &vmap_nodes[nr_vmap_nodes]; (vn)++)
+
 static inline unsigned int
 addr_to_node_id(unsigned long addr)
 {
_

Patches currently in -mm which might be from urezki@gmail.com are

vmalloc-add-for_each_vmap_node-helper.patch
vmalloc-switch-to-for_each_vmap_node-helper.patch
vmalloc-use-for_each_vmap_node-in-purge-vmap-area.patch